Property, Plant and Equipment - Additional Information (Detail) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2016 USD ($)	Dec. 31, 2016 USD ($) a	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		$ 310,256	$ 297,056
Depreciation expense		14,200	14,300	$ 14,800
Proceeds from sales of property, plant and equipment		4,349	35	66
Gain (loss) on disposal of property, plant and equipment		$ 185	(649)	$ (158)
Olive Branch Assets [Member]
Property, Plant and Equipment [Line Items]
Loss on asset reclassification			500
Proceeds from sales of property, plant and equipment	$ 4,200
Gain (loss) on disposal of property, plant and equipment	$ 100
Area of land owned | a		62
Construction in Process [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		$ 4,172	$ 11,032